davej:
NetBSD or OpenBSD runs better on sun4c architecture (IPX,
SS1, SS2, IPC, probably some others), due to the fact they
use a different memory management model (see on NetBSD's
sparc port page for more information). I wasn't even able
to get Debian install floppy to boot on an SS2 (it ran
NetBSD for a year, now runs OpenBSD).